Seagate NAS HDDs provide the best-performing, highest-capacity storage for 1- to 8-bay NAS systems. The NAS HDD has been compatibility tested with the industry's top NAS solution providers. Built and tested to provide industry-leading performance, Seagate NAS HDDs quickly and reliably support home and business applications. With support for multiple HD video streams and user profiles in a multi-drive environment, these NAS drives provide the performance demanded by NAS solutions and incorporates Seagate NASWorks software to reduce common issues. NASWorks improves the reliability of NAS HDD by fine-tuning drive features to be more compatible in NAS systems. Type: Hard drive - internal Capacity: 4 TB Interface: SATA 6Gb/s Data Transfer Rate: 600 MBps Features: Advanced Power Management technology, NASWorks, 24x7 continuous operation Dimensions (WxDxH): 4 in x 5.7 in x 1 in Weight: 22.22 oz Localization: Worldwide Microsoft Certification: Compatible with Windows 7 Manufacturer Warranty: 3 years warranty Device Type: Hard drive - internal Capacity: 4 TB Interface: SATA 6Gb/s Features: Advanced Power Management technology, NASWorks, 24x7 continuous operation Width: 4 in Depth: 5.7 in Height: 1 in Weight: 22.22 oz Drive Transfer Rate: 600 MBps (external) MTBF: 1,000,000 hours Non-Recoverable Errors: 1 per 10^14 Load / Unload Cycles: 600,000 Interfaces: 1 x SATA 6 Gb/s Power Consumption: 0.5 Watt (sleep) 0.5 Watt (stand by) 3.95 Watt (idle) 4.8 Watt (active) 2 Watt (start) OS Required: Apple MacOS, Linux, Microsoft Windows Compatible with Windows 7: Compatible with Windows 7 software and devices carry Microsoft’s assurance that these products have passed tests for compatibility and reliability with 32-bit and 64-bit Windows 7. Localization: Worldwide Package Type: Retail Service & Support: Limited warranty - 3 years Min Operating Temperature: 32 °F Max Operating Temperature: 158 °F Shock Tolerance (operating): 80 g @ 2 ms Shock Tolerance (non-operating): 300 g @ 2 ms